Spray your weeds with diluted vinegar.not only will it kill them, but the plants and soil love it. Read how here, and see the before and after pictures. I just learned about this in my winter gardening class the other day and the teacher has done it for
Succulents grown into the shape of a Chameleon, Montreal Botanical Garden- this is the coolest thing ive ever seen I really want to go here one year. research for 2014 because I'll be right near montreal!